cmake : do not build common library by default when standalone (#9804)

examples/llama.android/llama/build.gradle.kts

@@ -18,6 +18,7 @@ android {
         }
         externalNativeBuild {
             cmake {
+                arguments += "-DLLAMA_BUILD_COMMON=ON"
                 arguments += "-DCMAKE_BUILD_TYPE=Release"
                 cppFlags += listOf()
                 arguments += listOf()